How does the fingerprint reader work on mobile phones?

How does the fingerprint reader work on mobile phones?


Fingerprint reader is now on most smart devices, including smart phones and laptops. Have you thought about how the fingerprint reader works? Here’s this article.


Amid the rapid growth of technology, security has become a very important factor in smart phones, because most of them are vulnerable to data theft! The fingerprint reader is one of the most important means of protection that is not limited to expensive phones, the technology has moved to all smart phones and become more accurate and fast in reading data.

In an attempt to prevent piracy and other anti-social activities, smart phone manufacturers have implemented one of the most secure technology in their smartphones in the form of a fingerprint reader. Fingerprint technology has contributed to the improvement of personal protection and safety, along with many other technologies. Fingerprint reader comes in three types; Scanners, Intensive Scanners, Ultrasonic Scanners.


Scanners are the oldest fingerprint reader, which collects and compares fingerprints. As the name suggests, this involves capturing a visual image – specifically photographic – and using algorithms to detect unique patterns on the surface of the phone, such as finger bumps or markings, and analyze lighter and darker areas of the image. Just like the smart phone cameras, these sensors can have a limited resolution, high resolution depends on the accuracy of the device in setting the details of your finger, thus increasing the level of security.However, these sensors pick up much differentiated images than regular camera Of course, when you put your finger on the scanner, the image is too dark, so the scanners provide a series of LEDs that act like a flash to illuminate the image while the fingerprint reader is working. Major defects in the Optical Itzhat is that it is easy deception, where he picks up a two-dimensional images ((2D only, so it is not safe enough to put your trust and your details are most sensitive in. In addition to it’s huge size compared to phone-sized, so moving companies to get rid of them these days.


Intensive scanners

The most common type of fingerprint reader scanner used today is the intensive scanners. You will find this kind of scanner inside various smart phones, including Galaxy S8, HTC U11, LG G6 and others. Again, the name refers to the main component of the scanner, the capacitor, you may have heard of if you have a little knowledge of electronics Instead of creating a traditional fingerprint image, the capacitor fingerprint reader uses small matrix circuits to collect data about fingerprints. The electric charge stored in the condenser changes slightly when the finger is placed over the conductive panels, while the air gap leaves the charge in the capacitor relatively unchanged. Empire to keep track of these changes, and can then be recorded by analog converter to digital. Once captured, you can analyze these digital data to search for distinctive and unique fingerprint, which can be saved for use in comparison later attributes.

What is particularly clever about this fingerprint reader design is that it is much more difficult to trick the scanner, since the phone can not be opened using a picture, a prosthesis or various materials because it will record slightly different changes in the intensive charge. Of hardware or software piracy.

Create a large enough array of these capacitors, and the number of condensates typically reaches hundreds if not thousands in a single capacitor scanner, so that it gives a very detailed picture of the fingerprints that are generated from a set of electrical signals. Just like the scanner, increasing the number of capacitors leads to higher resolution of the fingerprint reader, increasing the level of security up to a certain level. At the same time, many complain that it requires several attempts to open, and the increase in the number of condensates slightly raise the price, but companies are gradually improving the performance of the condenser, and simplify it by making it a simple click and touch.

Ultrasound scanners

The latest fingerprint reader technology in the world of smart phones is an ultrasonic sensor, which was first announced for its presence inside the Le Max Pro smartphone. To capture fingerprint details, the fingerprint reader consists of both; In this process, the ultrasonic pulse is moved against the finger on the surface, where some waves are absorbed and others are re-carried onto the surface of the scanner depending on the protrusions, pores and other details that are distinct from the other fingerprints. The process produces a three-pronged version He returned ((3D fingerprint!

How the fingerprint reader works Ultrasonography

The first step
Once we put our finger on the surface of the scanner, it captures the black and white image by the technology used in the device.

The second step
After that, the fingerprint will be encrypted into a digital model, storing the unique fingerprint properties in a series of numbers. This encrypted data is then stored in the database from the phone.

The third step
Next time, when you put your finger on the scanner, the encrypted data compares itself with the numerical model stored by.


App and folder close

You can use your mobile phone’s fingerprint reader to close specific folders, such as a photo gallery or more, with the merge option on most devices, or you can download this merge app from your store. The fingerprint reader can also interact with other applications. You can use it to add some shortcuts. Instead of going to the main screen and searching the files, you can set a gesture on the scanner to open specific applications directly. In addition to being one of the options available to take Silvi, it is also the easiest way by gently pressing the scanner back to capture the image, rather than touching the screen.


This makes the fingerprint reader a safer and more convenient alternative to remembering countless usernames and passwords, and more mobile payment systems. However, you should not neglect the basic security factor with a strong password and two authentication factors in the event of a reader crash Fingerprint, and keep in mind that fingerprints are just another way to protect your personal data and not the best solution to your security concerns, as they may have been captured in the past, or even that you can “lift” your fingerprints using a high-quality image. This will be a big problem because while you can change your password, you can not change your fingerprint. But in general, these violations are extreme cases, scanners are likely to become a more common security tool in the future, and an effective means of protection in case of stolen phone or lost.



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